Belgian family group Van Hool is close to being declared bankrupt. The manufacturer is responsible for delivering electric buses for the future Tzen4 and Tzen 5 lines in Île-de-France.

Tzen 4 will replace the 402 bus network, linking Viry-Châtillon to Corbeil-Essonnes. VanHool also supplies vehicles on the bus networks of Metz (Moselle) and Martinique, as well as Pau (Pyrenees) for hydrogen buses.